Geometric morphometrics and paleoproteomics enlighten the paleodiversity of Pongo

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Date

15 décembre 2023

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Périmètre
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HAL SHS (Sciences de l’Homme et de la Société)

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Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0291308

Ce document est lié à :
info:eu-repo/grantAgreement//861389/EU/Palaeoproteomics to Unleash Studies on Human History/PUSHH

Ce document est lié à :
info:eu-repo/grantAgreement//101021361/EU/Overcoming the frontiers of biomolecular studies on human history and adaptation using palaeoproteomics/BACKWARD

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Archives ouvertes

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Centre pour la communication scientifique directe

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http://creativecommons.org/licenses/by/ , info:eu-repo/semantics/OpenAccess

Sujets proches En

Satyrus Orang-outang Faunus Macrobates Pongo Lophotus Animal horns Dentine

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Jülide Kubat et al., « Geometric morphometrics and paleoproteomics enlighten the paleodiversity of Pongo », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.1371/journal.pone.0291308

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Pleistocene Pongo teeth show substantial variation in size and morphology, fueling taxonomic debates about the paleodiversity of the genus. We investigated prominent features of the enamel-dentine-junction junction (EDJ)-phylogenetically informative internal structures-of 71 fossil Pongo lower molars from various sites by applying geometric morphometrics and conducted paleoproteomic analyses from enamel proteins to attempt to identify extinct orangutan species. Forty-three orangutan lower molars representing Pongo pygmaeus and Pongo abelii were included for comparison. The shape of the EDJ was analyzed by placing five landmarks on the tip of the main dentine horns, and 142 semilandmarks along the marginal ridges connecting the dentine horns. Paleoproteomic analyses were conducted on 15 teeth of Late Pleistocene Pongo using high-resolution tandem mass spectrometry. The geometric morphometric results show variations in EDJ shape regarding aspects of the height and position of the dentine horns and connecting ridges. Despite the issue of molar position and sample size, modern molars are distinguished from fossil counterparts by their elongated tooth outline and narrowly positioned dentine horns. Proteomic results show that neither a distinction of P. pygmaeus and P. abelii, nor a consistent allocation of

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